Railway car side door



Jan. 25, 1944. K. F. NYsrRoM RAILWAY CAR SIDE DOOR 10 Sheets-Sheet 2Filed April 21, 1941 r. FIF;

Jan. 25, 1944. K. F; NYs'rRoM 2,340,014

RAILWAY CAR SIDE DOOR Filed April 21, 1941 10 Sheets-Sheet 3 K. F,NYs'rRoM 2,340,014

RAILWAY CAR SIDE DOOR Filed April 2l, 1941 10 Sheets-Sheet 4 Jan '251944|- K. F. Nys-mom RAILWAY GAR SIDE noon Filed April 21. 1941 10Sheets-Sheet 5 fzyerzar: [fr] Jan. 25, 1944. K. F. NYsTRoM RAILWAY GARSIDE DOOR Filed April 2l, 1941 10 Sheets-Sheet 6 UFA/ys Jan. 25, 1944. KF 'NYs1-R0M 2,340,014

RAILWAY CAR SIDE DODR Filed April 21, 1941 10 Sheets-Sheet 7 zza ZM K.F. NYs'rRoM 2,340,014

RAILWAY CAR SIDE DOOR Filed April 21, 1941 10 Shefs-Sheet B Jan. 25,1944. K. F. NYsTRoM 2,346,014

RAILWAY CAR SIDE DOOR Z0 2J j 506 i Z55 2% 55 [mana/r Karlfjwrm FiledApril 21, 1941 10 Sheets-Sheet 10 wlll fl. w A

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Patented Jan. 25, 1944 UNITED STATES PATENT OFFICE 14 Claims.

This invention relates to side doors for railway cars and moreparticularly to railway cars having a great inside width while fallingwithin the maximum outside width defined by the clearance lines whichare specified by the Association of American Railroads. Railway carscommonly have doorways in the side walls thereof and doors for closingsuch doorways are commonly movable in planes substantially parallel withthe side walls of the car. The necessary characteristics of such doorsare that they be strong enough to resist thrusts from the inside or thecar caused by the shifting of the lading and that they form reasonablytight seals with the frame members around the doorways to prevent theentrance oi' moisture, cinders and other foreign matter into theinterior of the car.

An object of my invention is to provide a car having a clear insidewidth of 9' 6" and an overall outside width of l' 8", which latterdimension is the maximum permitted for interchange among the variousrailroads of the country. The conventional type of side door is one inwhich the operating mechanism for the door. such as rollers, startinglever, lock and handle are mounted upon the outside face of the door andthe width of such members necessarily restricts the inside width of thecar. I accomplish the above mentioned object by placing the door trackand Ithe rolling means for the door substantially below the door.

This is an improvement over the provision of such rolling means on theoutside face of the door as the additional' clearance obtained permitsan increase of the inside width o! the car. V

Another object is to form an effective seal ccmpletely around the doorto prevent the entrance oi? foreign matter into the interior of the car.I accomplish this object, rst, by constructing the door and then usingsuch door as a gauge around which certain framing members o! the car arepositioned and then secured together to form a rigid doorway frame. Thedoorway frame is thus custom built to the size of the door. therebyeliminating the openings usually caused by the inherent variations insize of a door and doorway frame. The second method contributing to theaccomplishment of the above object is the arranging oI the door, doorwayframe and operating mechanism for the door in `such a way that a seal isiormedlas aresult of the closing movements of the door, as willhereinafter be explainedin detail.

Another object o! the invention is to use the door track as areinforcement.I The side wall ci' a railway car is naturally weak at thedoorway. both for the reason that the doorway constitutes an inherentweakness in the side wall and for the reason that the doorway iscommonly in the center of the car where the beam stress is the greatest.I rigidly attach the track to the side sill below the doorway to providethe reinforcement and also utilize a part of the track for the purposeof underlying and supporting part oi' the threshold plate.

Another object is to provide a door operating means wherein the closingmovement of the door moves such door outwardly from the car a distancesufiicient to form seals on certain edges of the door. The lading withinthe car is i'requently thrown against the door to cause an outwardthrust on such door and, in the construction herein disclosed, suchoutward thrust tends to provide a still tighter and more effective sealaround the edges of the door whereas in certain types of conventionalcar the closing oi' the door tends to create an opening rather than aneftective seal.

In the type of door herein disclosed, the operating means comprisesrollers pivotally mounted upon the door` and arranged to roll, duringopening and closing movements, upon a track mounted upon the car. Thetrack is provided with depressions positioned so that when the door isin the full opened or full closed position, the weight of the door isremoved from the rollers and transferred to a rigid member of the doorso that the friction between such rigid member and the door trackretards movement of the door. In a conventional construction, 'saidrigid member is comprised of the roller housings which are commonlycastings. The' difiiculty of maintaining a large area of frictions]contact. due to irregularities in the castings, reduces the frictionalresistance to moving and permits the door to open or close itselfunexpectedly during service movements of the car. In the inventionherein disclosed, I use pressed or rolled parts tor the above mentionedrigid member. thereby obtaining a more even contact between such memberand the door track `and consequently a greater trictional resistance tomoving. Such pressed or rolled member may be the lower frame member o!the door.

' Another object of the invention is to provide a door lock which docsnot interfere with sealing strips on the edges oi the door and doorwaytrame, which method oi.' accomplishing such means will be hereinafterpointed out in detail.

Another object is to utilize the door track tor the double purpose ofproviding a support for rolling movement of the door and of placing alimitation upon the upward movement thereof. The use of a unitary memberto accomplish these two purposes eliminates the effect of inaccuraciesin assembling the various parts of the car.

As hereinabove pointed out, I use the door as a, gauge for positioningthe various parts of the doorway frame during assembly of such frame andI also utilize the door track as a gauge from which the positions of theother parts of the doorway frame may be determined.

When the door is in the full opened or full closed position, the weightis preferably removed from the rollers and the door is supported byfriction surfaces at the upper and lower edges. which surfaces.according to my present invention. are preferably inclined. Suchinclination permits the door to deflect laterally; that is, in, wardlyor outwardly, and thereby permits the upper and lower edges thereof toride upwardly or downwardly on the inclined surfaces so as to compensatefor slight irregularities in the shape of the door and in thepositioning of the members having such inclined surfaces.

Another object is to provide a sealing means at the lower edge of thedoor, which sealing means is formed by a lower door member beingdisposed relatively close to the side sill of the car and an upper doormember being disposed relatively close to the threshold plate of thecar, thereby providing two seals. I also provide a trough between theseals for the purpose of trapping and carrying away liquid which passesthrough the outermost seal.

Another object is to utilize the above mentioned rigid member on thedoor as a guide to restrict lateral motion during horizontal rollingmovement of the door in addition to using such member to form a frictionelement to retard movement of the door when in the full opened or fullclosed position.

Other objectsand advantages of my invention will be apparent from thefollowing detailed description by referring to the accompanyingdrawings.

In the drawings:

Fig. 1 is a 'side elevation of a portion of a railway car showing oneembodiment of my invention.

Figs. 2 and3 are sections on lines 2-2 and 3l, respectively, of Figure1.

Figs. 4 and 5 are sections similar to Figures 2 and 3, respectively.showing a modified form of the invention.

Fig. 61s an exploded view showing the door and doorway frame members intheir proper relation.

Fig. l is an enlarged view of the lock mechanism shown in Figure l, thedoor being fully closed and locked.

Fig. 8 is a view of the lock mechanism shown in Fig. 7 when the door isin full closed position but not locked.

Fig. 9 is a section on line 9-9 of Figure '7.

Fig. 10 is a view similar to Figure 2 showing another modified form ofthe invention'.

Fig. l1 is an elevational view of a modified form of starting bracket ofthe general type disclosed in Figure l.

Fig. l2 is a plan view of the bracket shown in Figure 11 with the doortrack not shown for clarification.

Fig. 13 is a section on line i3--i9 of Figure 11.

Figs. 14 to 17,-incluslve, are views similar to a portion of Figure 3showing modified forms of the invention.

Figs. i9 to 20, inclusive. are views similar to the lower part of Figure2. showing further modiilcations of my invention.

Figs. 21 and 22 are views similar to the upper part of Figure 2, showingfurther modifications of my invention.

Figs. 23 and 24 are views similar to the lower part of Figure 2, showingother modifications of my invention.

In the modiiication of my invention shown in Figures l to 3, a portionof a railway car is disclosed having the usual side plate 2, side sill 9and vertical posts, such as the door posts 5, B, extending between andsecured to the plate 2 and sill 3. The present invention is particularlyrelated to the door and doorway structure of the car: the other parts ofthe side wall may be of any convenient design such as, forexample, thatshown in my Patent No. 2,150,897 dated March 21, 1939. As is usual inthis type of car, the side sill 9 is a common fpart of -the derframe andthe side wall and. in the form s own, comprises an inwardly facingchannel. The slde plate 2 is comprised of an upper portion 9 and a lowerportion 9 with the car roof il being secured to the upper portion B. Thedoor posts 5, 6, shown more particularly in Figure 6. each comprise a atpart i2 substantially in the outer plane of the side wall, an inwardlydirected flange I4 defining an edge of the doorway and a Z bar I5 formedon the opposite side of the post from the flange I4. Filler strips Ilare secured to the'posts 5, 6 for the purpose of attaching the side walllining 9 as shown in Figure 3. The threshold plate 29 is supported onthe upper surface of the side sill 9 and extends outwardly (2l) beyondsuchsill and also downwardly (23) and inwardly (24) for the purpose ofsupporting the car floor 26.

The broken line 21 shown in Figures 2 and 4 is the established clearanceline: that is, no part of the car is permitted to extend outwardlybeyond this line. As shown most clearly in Figure 6, the door 29 is madeup of a rectangular framework comprised of the top frame strip 39. thebottom frame strip 32, the front frame strip 98 and the rear frame strip95. This framework supports a relatively thin metallic sheathing 36formed with substantially horizontal stlieners 99 extending between thefront (99) and rear (35) frame strips. ,1,

The door 29 has front (49) and rear (4|) roller housings rigidly securedthereto with rollers 43 pivotally mounted within the housings. The doortrack is a channel member 44 having its web 46 secured to the outer sideof theweb I1 o! the channel shaped sill 8 with its upper ange 49underlying and supporting the outwardly projecting part 2i of thethreshold plate 29. The lower ange 69 of the channel track member 44supports the tread which is an angle 52 upon which the rollers 43 rollduring horizontal movement of the door 29. 'I'he lower flange 50 iscoped so that the tread $2 may be depressed (59) at certain places belowthe general level of the tread.

'I'he bottom frame strip 92 of the door 29 coni-- prlses a vertical legB5 secured to the door substantially in the plane of the door sheathing99 and a horizontal leg 59 extending inwardly below the threshold plate2li. The horizontal leer 99 is formed with a flange $8 inclineddownwardly and outwardly from the car. The web 49 of the channel trackmember 44 has formed therein an outwardly projecting, horizontallyextending corrugation I9 .with the upper side 9i thereof inclineddownwardly and outwardly substantially complementary with the flange 99o! the bottom trame strip 32. The depressions 93 in the tread 92 arearranged so that when the door 29 is in the full opened or full closedposition, the rollers 43 are above the depressions 93 and the weight ofthe door is taken by the flange 99 of the bottom frame strip 32 engagingthe upper side 9| of the corrugation 99. The rollers i3 are then out ofengagement with the tread 92 and may be rotated freely.

When the door 29 is in the full opened or full closed position, theweight of the door causes the bottom frame strip ilange 99 to bear uponthe corrugation 99 and induces a frictional resistance to slidingmovement of the flange 59 on the corrugation 99 which frictionalresistance retards horizontal movement of the door. When the door 29 isin any position between full opened and full closed, the rollers 93engage the undepressed parts of the tread 92 and the door moves freelyin a horizontal direction. In order to overcome the above mentionedirictional resistance and move the door 29 into such position that therollers are operative, a starting lever 62 is pivotally mounted upon thedoor 29, which lever 92 has a projection 93 on the lower end thereofarranged to engage a starting bracket 65 secured to the side sill 3 sothat a leverage may be exerted to pry the door 29 into rolling position.The operation of the starting lever 92 is more fully explained inSchlesinger Patent No. 1,963,152 dated Junerl9, 1934.

The rollers 43 are above the depressions 53, as hereinabove explained,when the door 29 is in the full closed position; the ilange 99 of thebottom framestrip 32 then engages the inclined upper side 9| of thecorrugatlon 99 and tends to move the door 29 outwardly from the car. Inother words, the weight of the door 29 tends to cause it to slide downthe inclined side 9| of the corrugation 99. Similarly, at the top edgeof the doorway, a sealing strip 99 is secured to the side plate 2 of thecar and the top frame strip 39 of the door 29 has a downwardly andoutwardly inclined part 99 arranged substantially complenentary with adownwardly and outwardly inclined part 1| of the top `sealing strip 99.The weight of the door 29 also causes such door to tend to slide downthe inclined part 1I of such sealing strip 99. The outward movement ofthe door is limited at the top by a hood 12 having a depending flange 1larranged to engage an upstandlng part 19 of the top frame strip 39 andat the bottom by depending lips 11 on the roller housings arranged toengage the upstanding flange 19 of the tread angle 92.

As shown in Figure 3. the front door stop 92 is secured to the frontdoor post 9 and includes a pocket formed by a forwardly directed flange93, an outwardly directed web 95 and a reiiange 99 inclined outwardlyand rearwardly from the web 99. The front frame strip 23 of the door 29has a flange 99 disposed substantially in the plane of the doorsheathing 39. an outwardly directely web 99 and a refiange 9| inclinedoutwardly and rearwardly substantially complementary with the reilange99 oi the door stop 92. A spark strip 92 is secured to the rear doorpost 9 and includes an outwardly directed nange 9B and a refiange 99inclined outwardly and rearwardly. The rear framestrip 39 of the door 29includes a web- 91 substantially in the plane of the door sheathing 39and a flange 9B inclined inwardly and forwardly substantiallycomplementary with the reflange 95 of the spark strip 92. The sparkstrip 92 may be provided with a lip 99 so that, when the rear door post9 is leading, the lip 93 dei'lects foreign matter away from the sealformed by the refiange 99 and flange 99. When the door 29 is movedoutwardly by the means provided at the top and bottom of the door ashereinabove described. the reilanges 9|, 99 of the front frame strip 33and front door stop 92, respectively. engage to seal the front edge ofthe doorway and the flange 99 of the rear frame strip 39 engages thereflange 95 of the spark strip 92 to seal the rear edge of the doorway.It is pointed out that any thrust'upon the door 29 from the interior ofthe car tends to increase rather than decrease the effectiveness of thedoor seals.

The locking mechanism |99 disclosed in Figures l and 3 will be describedin detail hereinafter.

Figures 4 and 5 show a modified construction in which the door |93 movesinwardly when the weight is removed from the rollers 99 in contrast withthe structure disclosed in Figures 1 to 3 wherein the door is movedoutwardly. The door track |94 comprises a channel member secured by itsweb |99 to the side sill 3 as hereinabove described and having a treadangle 92 carried by the lower ilange |91 of the channel member |94. Afriction member |99 for supporting the door |93 when the weight isJremoved from the rollers I3 consists of an angle having a downwardlyand inwardly inclined ,flange |99 rigidly secured to and forming a partof the door track |94. The friction member |99 may be formed of aplurality oi angles spaced apart longitudinally of the car or, as analternative, a continuously extending angle. The bottom frame strip ||9of the door |93 shown in this modication is comprised of a vertical leg||2 secured to the door |93 and a downwardly and inwardly inclined leg|I3 arranged substantially complementary with the inclined flange |99 oithe friction member |99 so that, as the weight of the door |93 isremoved from the rollers I3 and transferred to the bottom frame stripH9, the weight of the door tends to move the door inwardly toward thecar. The roller housing |I5 is provided with a boss H9 have its uppersurface ||9 inclined in substantial conformity with the under side ofthe inclined ange |99 of the friction member |99 so as to restrictupward movement of the door |93 and thereby prevent disengagement fromthe tread angle 52.

At the upper side of the doorway frame, a hood ||9 is secured to theside plate |2| and has a horizontal web |22, a depending flange |29 anda reflange |25 inclined inwardly and downwardly. The top frame strip |21of the door |93 has a substantially vertical flange |29 and an upwardlyand outwardly extending reilange |39 arranged to overlie and becomplementary with the refiange |25 of the hood ||9. Then when theweight oi the door is removed from the rollers I3 by reason of suchrollers being disposed above the depressed parts 53 of the tread 92 ashereinabove described, the retlanges |29, |39 of the hood ||9 and topframe strip |21, respectively, engage and tend to move the door |93inwardly toward the car. As shown in Figure 5, the front door step |3|has a flange I 33 inclined forwardly and outwardly and the front framestrip |39 of the door has a ange |39 substantially complementary withthe flange |33 of the front door stop |3I, which flanges |33, |39 engageto seal the front edge of the doorway top frame strip 30.

' (|51) sides of the doorway frame are assembled 4 2,340,014 when thedoor |03 is moved inwardly as hereinarranged to extend upwardly andoutwardly above described. The spark strip |31 is formed therefrom Theupper part of the bracket |88 integral with apart of the rear door postand comprises an outwardly and rearwardlyy directed flange |39. The reardoor post 8 is provided with an outwardly projecting, verticallyextending corrugation |40 adjacent to the spark strip |81. 'I'he rearframe strip |42 o! the door |09 has a web |43 substantially in the planeof the door sheathing 35, a forwardly and inwardly directed ange |45 andan inwardly and rearwardly directed reflange |48. The reiiange |48 ofthe rear frame strip |42 engages a part oi' the corrugation |40 to sealtherear edge of the doorway when the door is moved inwardly as describedabove.

Figure 6 illustrates the method of assembly oi' the doorway trame toobtain small clearances between all the cooperating sealing parts of thedoor and doorway frame. The door 29 is first constructed and, asdisclosed in Figures l to 3. it is comprised of a front frame strip 33,a rear frame strip 95, a. top frame strip 30, s. bottomy frame strip 92and sheathing 35 including stiffeners I0 secured to the frame strips.

The doorway framing is assembled from four parts. The lower part 9 ofthe side plate 2 of the car is preferably made in several pieces and ofsuch pieces forms a part of the upper side of the doorway framing. Aheader Ill, top sealing strip 88 and hood T2 are rigidly secured to theside plate piece |50, thereby forming the upper side |5| of the doorwayframe. The lower side |54 oi the doorway frame consists of the thresholdplate 20 and the channel track member 44 rigidly secured together. Theiront door post l and front door stop 82 are rigidly secured together toform the iront side |55 or the doorway frame and the rear door post 8and spark strip 92 are secured together to i'orm the rear side |51 ofthe doorway frame.

The door 29 is then :placed in a jig and the lower side |54 oi thedoorway frame is arranged adjacent to the lower edge of the door 29 withthe upper side o! the corrugation 59 in contact with the inclined anse58 oi' the bottom frame strip $2. The uppe rside |5| of the doorwaytrame is placed adjacent to the top edge of the door with the inclinedpart 1| of the top sealing strip 88 engaging the inclined part 59 of theThe front (|58) and rear in a similar manner with the cooperatingsealing parts of the door and doorway frame disposed in contact.

The four sides oi' thev doorway frame are then rigidly secured together,preferably by welding and placed on the car in proper relation to theother parts of the car. which other parts have preferably been alsoassembled as uinits. In order to be certain that the respective door anddoorway frame are used on the same car, it is preferable to keep thedoor 29 attached to the frame while the latter is applied to the car.After the assembled frame is in the proper position relative to theother parts of the car, the track member 44 and threshold plate 20 aresecured toK the side sill 3 and the piece |50 of the side plate 2 whichforms a part of the doorway frame is then secured to the other pieces ofthe side plate 2. l

The locking mechanism |00 for the door 29, as shown in Figures 7 to 9,is comprised oi' a bracket |80 rigidly mounted, preferably by means otrivets |8l, upon the side sill 9 of the car and by a cotter key |51.vertically extending slot |10 therethrough and the pin |58 projectsthrough the slot |10 so that the latch member |89 is slidable verticallyto an extent limited by the length of the slot |10. The latch member |89is also tree to rotate upon the pin |66 as a i'ulcrum, which rotation islimited by the parts |12, |19 of the bracket |60.

The front roller housing 40 has a nose |15 which protrudes beyond thefront edge |14 of the closed position, as shown in Figure 7. the lowerend |18 of the latch member |89 is disposed in the hole |18 in theroller housing nose|15 and thereby prevents horizontal movement of thedoor 29. The latch member |59 is provided with an outwardly projectinglug |19 and a dog ill is pivotally mounted upon the pin |08 and alsoprovided with an outwardly projecting lug |82 aligned with the lug |19when the lock is in the locked position, as shown in Figure 7. The lug|82 has a hole |84 arranged to align with the hole |85 in the latchmember lug |19 when the lock is in the position shown in Figure '1. Thelatch memzber |89 is thus prevented from moving vertically and the door29 is, therefore, locked position. A seal may be inserted through boththe holes |84, |88 so that any unauthorized opening oi'lthe door 29 maybe detected by railroad oflicials, or others responsible for maintainingthe car in the sealed condition.

When the door 29 is in an opened position, both the latch member |09 andthe dog |0| hang by their own weight in depending positions. door 29 ismoved to the full closed position as shown in Figure 8, the latch member|69 rotates about the pin |58 to the position shown. In order to lockthe door 29, it is necessary to rotate the dog |0| until the lug |82thereof is moved out of the path of the lug |10 on the latch member |80;then the latch member |89 may be moved upwardly and then downwardlyuntil the lower end |19 thereof is inserted in the hole |18 throughdoor. In order to open the door, the above described operation isperformed in reverse.

The structure shown in Figure 10 is similar in many respects to thatshown in Figure 2. The track is a channel member |90 which carries thetread angle 52 and reinforces the threshold plate 20 as hereinbei'oredescribed. The friction member |9|` may be comprised of intermittentpieces or a continuous' piece secured to and forming a part of thechannel member |90 and, in the modication shown, has an upper iiange|99` which is substantially horizontal. The bottom frame strip |94 ofthe door upper flange 292 of the channel track member |99 to limitupward movement of the door |96.

The upstanding flange 209 of the bottom frame strip |94 preferablyterminates close to the web 293 of the channel track member |99 so as torestrict the amount of moisture and other foreign matter which may passtherebetween. The vertical leg |91 of the bottom frame strip |94 isrelatively close to the outer edge of the threshold plate 29, also forthe purpose of restricting the passage of foreign matter into the car.I'he channel formed by the vertical leg |91, horizontal leg |99 andupstanding flange 290 of the bottom frame strip |94 functions to drainoff any liquid which happens to pass between the upstanding flange 299and the web 203 of the channel track member |90.

At the top of the doorway frame shown in Figure 10, the door header 296projects outwardly beyond thev side plate 2. The top frame strip 206 ofthe door |96 has an inwardly directed flange 299 overlying a part 2|| ofthe header 296 and a hood 2|2 overlies the flange 209 of the top framestrip 206 and includes a flange 2|4 disposed outwardly therefrom.Upstanding fingers 2|5 on the door |96 cooperate with the hood 212 toguide the top of the door |96 during its horizontal movement.

Figure l shows a bracket 65 secured to the sill 3 and arranged tocooperate with the starting lever 62 to move the door 29 to a rollingposition. Figures 11 to 13 show a modified form of such bracket. 'I'hebracket 220 comprises a base 22| secured to the sill 3 and outstanding,spaced apart lugs 223, 224 having vertical faces 226 on bothsidesthereof so that the starting lever 62 may engage any one of foursurfaces 226 for the purpose of moving the door 29. The lugs 223, 224underlie the lower flange 59 of the channel track member 44 for thepurpose of supporting the track member and extend outwardly beyond thetread angle 52 and upwardly (221) for the purpose of engaging the lowerend 63 of the starting lever 62. Additional track supports may beprovided by edgewise disposed plates 229, preferably welded in position,as shown in Figure 1.

In the modification shown in Figure 14, the front door stop 232comprises an outwardly and forwardly directed web 233 and an outwardlyand rearwardly directed flange 265. The front frame strip 236 of thedoor comprises a flange 236 substantially in the plane of the sheathing36 of the door, a web 239 projecting outwardly and forwardly therefromsubstantially complementary with the web 233 of the door stop 232 and areange 24| extending outwardly and rearwardly substantiallycomplementary with and engaging the ange 235 ofthe front door stop 232.The structure shown in Figure 14 may be substituted for that shown ineither Figures 2 or 4, preferably that shown in Figure 2.

In the modification shown in Figure 15. the front door stop 244comprises a. flange 245, an outwardly directed web 241 and an outwardlyand rearwardly directed reflange 249. The front frame strip 259 on thedoor has a flange 25| disposed substantially in the plane of the doorsheathing 36, an outwardly directed web 253 and an outwardly andrearwardly directed reange 254. The frame strip 250 and door stop 244are proportioned in such a way that the reange 254 of the frame strip250 engages the refiange 246 of the door stop 244 before the respectivewebs 263, 241 engage, thereby forming a tighter seal.

In the modification shown in Figure 16, the front door stop 251 isformed integral with a part of the front door post 5; otherwise thestructure differs from Figure l5 only in the form of front frame strip256 which embodies a rearwardly directed lip 269 for the purpose ofstiffening the front edge of the door.

Figure l'l discloses a front door stop 263 and a front frame strip 264substantially as shown in Figure 15. Reinforcing means 266 are providedfor the door stop 263, which means is either a series of verticallyspaced clips or av vertically extending member, preferably the former.

Figure 18 is somewhat like the lower part of e Figure 4, except in themeans provided for guide ing the door during the horizontal rollingmovement thereof. The lip 11 provided on the roller housing 4I as shownin Figure 4 is dispensed with and the hereinafter described meansprovided in place thereof. The bottom frame strip 211 of the doorcomprises a vertical leg 216 secured to the door, an inwardly anddownwardly inclined leg 290, a depending flange 26| and an inwardly anddownwardly inclined reflange 263. The friction member 264, which issecured to and forms a part of the track member 266, consists of avertical leg 291 secured to the web 269 of the channel track member 266,an upwardly and outwardly inclined leg 299 and an upstanding flange 292.The inclined leg 299 of the friction member 264 and the inclined reange293 of the bottom frame strip 211 engage to provide frictionalresistance to horizontal movement of the door when the weight of thedoor is taken off the rollers 43. The upstanding flange 292 of thefriction member 264 and the depending flange 26| of the bottom framestrip 211 engage to guide the door during its rolling horizontalmovement upon the track 296.

In the modification shown in Figure 19, the track 295 is a channelmember wherein the lower flange 296 thereof supports the tread angle 52in a manner similar to that disclosed in Figure 2. The upper flange 296of the channel member 295 is spaced below the threshold plate 20 andinclined upwardly and outwardly to form a friction member. The bottomframe strip 299 of the door comprises a vertical leg 39| secured to thedoor and a downwardly and inwardly inclined leg 392 which engages theupper flange 296 of the channel track member 295 for the purpose ofproviding frictional resistance to the movement of the door when theweight of the door is taken 0H the rollers 43. The door is thereby movedinwardly as pointed out with reference to Figure 4.

Figure 20 discloses a modification wherein the members which cooperateto frictionally resist movement of the door are disposed below the tread52 and rollers 43. The track is a channel member 395 having the treadangle 52 mounted upon the upper flange 396 thereof; the lower flange 393of the channel member 395 has a part 369 inclined upwardly andoutwardly. The bottom frame strip 3|| of the door has an upper part 3|2secured to the door and arranged to extend downwardly and outwardly ofthe roller housing 3|4. The lower part 3|6 of the bottom frame strip 3|lis inclined inwardly and down` wardly and engages the part 399 of thelower flange 396 of the channel track member 305 for the purpose ofproviding frictional resistance to horizontal movement of the door andof tending to move the door inwardly when the weight ol the door isremoved from rollers.

Figure 2l discloses an arrangement at the top side of the doorway framesimilar to that shown in Figure 2 except that, in the modication shownin Figure 21, the top sealing strip 3N and the hood 3|!) are made in onepiece.

Figure 22 discloses an arrangement at the top of the doorway framesimilar to that shown in Figure 4. The door header 322 extends outwardlybeyond the outer lace of the side plate 2. is danged upwardly (323) andthen inclined upwardly and inwardly (325) and preferably welded (325) tothe side plate 2 so as to form a box beam reinforcement 323 at the upperside of th doorway.

Figure 23 discloses a modiiication wherein the track (330) and friction(33|) members are separate parts whereas in most of the structureshereinbeiore disclosed, the friction member is rigidly secured to andforms a part of the track member. The track member 33|) is comprised ofan angle secured to the side sill 3 and supporting a tread angle 52secured to the horizontal leg 333 thereof. The friction member 33| isalso an angle secured to the side sill 3 in spaced relation above thetrack member 33|) and the bottom frame strip 334 of the door has aninwardly directed, substantially horizontal leg 335 which engages thefriction member 33| for purposes hereinbefore described.

In the modiiication disclosed in Figure 24, the track comprises achannel member 34|) having its web 34| secured to the web 41 of the sidesill 3 and its upper ilange 343 underlying and supporting the thresholdplate 20. The lower flange 344 of the channel member 34|) is comprisedoi a downwardly and outwardly inclined part 343 and a substantiallyhorizontal part 341. The bottom frame strip 349 of the door comprises anupper part 350 secured to the door and a lower part formed with aninwardly directed, substantially horizontal flange 352 and an upwardlyand inwardly inclined reflange 353 substantially complementary with theinclined part 34B of the lower channel ilange 344. Roller housings 355are mounted upon the door and rollers 355`are revolubly mounted withinthe housings 355, the rollers 353 extending through openings 353 in theflange 352 so as to engage the substantially horizontal part 341 of thechannel member 343 for the purpose of moving the door horizontally. 'Ihesubstantially horizontal part 341 of the track 340 is formed withdepressions 353 at predetermined locations and when the rollers 353 areabove the depressions 359, the reange 353 oi.' the bottom frame strip343 engages the inclined part 343 oi' the channel member 34|! tofrictionally resist horizontal movement oi.' the door and to move thedoor outwardly as hereinabove described with reference to Figure 2. Theroller housing 355 is provided with an upstanding lip 33| arranged to beconiined between the channel web 34| and the horizontally extendingmember 352, thereby guiding the door during horizontal movement thereof.

The accompanying drawings illustrate the preierred form of theinvention, though it is to be understood that the invention is notlimited to the exact details ot construction shown and described, as itis obvious that various modifications thereof, within the scope oi theclaims.`will occur to persons skilled in the art.

I claim:y

Llnarailwaycarhavingadooropenlnginulnside a wall thereof and a doormovable in a plane substantially parallel with said wall for closingsaid opening; means to move the door outwardly as the door is moved intoclosed position, and means utilizing such outward movement for forming aweather seal between the door and periphery of said door opening.

2. In a railway car having a wall, a doorway in said wall and a doormovable in a plane parallel with said wall for closing said doorway. thecombination oi' a track comprising three laterally extending partsspaced apart vertically, means including a roller attached to said doorand arranged to roll the door upon the lowermost oi' said parts, amember secured to said door disposed between the center and uppermost ofsaid parts, and a depression in said lowermost part arranged so thatwhen said roller is above the depression said member engages said centerPart to frictionally support the door, said uppermost part arranged toengage with said member to limit upward movement of the door.

3. A structure as defined in claim 2 wherein said uppermost part isarranged to underlie and reinforce a threshold plate in said doorway.

4. In a railway car having a door opening in a wall thereof and a doormoveable in a plane substantially parallel with said wall for closingsaid opening, means to move the door outwardly as the door is moved intoclosed position, sealing members at edges of the door and door opening,and means utilizing such outward movement for forming a weather sealbetween the door and periiery of said door opening, certain oi saidsealing members limiting said outward movement of said door.

5. In a railway car having a wall with a doorway therein and avertically shiftable and laterally moveable door moveable parallel withsaid wall for closing said doorway, the combination of means to formseals above and below said doorway respectively upon a downward shiftingof the door, and means to form seals at both vertical sides oi' thedoorway upon an outwardY movement or the door, said last mentioned meanslimiting said outward movement of said door.

6. In a railway car having a wall, a doorway in said wall, a verticallyshiftable and laterally moveable door moveable in a plane substantiallyparallel with said wall to a position opposite said doorway, thecombination of vertical elements adjacent the vertical edges of saiddoorway, vertical members carried by said door arranged to be disposedat least partially on the inside ot said elements when the door isopposite said doorway. and to limit outward movement of said door, meansto dispose the weight or the door upon a downwardly and outwardlyinclined surface as the door shifts downwardly so that said door isforced outwardly from said position to a fully closed position, wherebysaid elements and members cooperate to form a weather seal and arearranged to utilize an outward thrust on the inside of said door to forma more eiective seal, and said vertical members and elements limit saidoutward movement of said door.

7. In a railway car having a wall, a doorway in said wall, a verticallyshiftable and laterally moveable door moveable in a plane substantiallyparallel with said wall to a position opposite said doorway, thecombination of verticalelements adjacent the vertical edges oi' saiddoorway, vertical members carried by said door arranged to be disposedat least partially on the ot said elements when the door is oppositesaid doorway and to limit outward movement of said door, means to shiftthe weight or the door upon a structure mounted on the car tofrictionally resist, movement of ,the door parallel to said wall, meansto move the door into engagement with a downwardly and outwardlyinclined surface as the door shifts downwardly so that said door isforced outwardly from said position to a fully closed position wherebysaid elements and members cooperate to form a weather seal and furtherfrictionally resist movement of the door parallel with said wall,andsaid vertical members and elements limit said outward movement of saiddoor.

8. In a railway car having a wall, a doorway in said wall, a laterallymoveable door moveable in a plane substantially parallel with said wallto a position opposite said doorway, the ccmbination of verticalelements adjacent the vertical edges of said doorway, vertical memberscarried by said door arranged to be disposed at least partially on theinside of said elements whenl the door is opposite said doorway and tolimit outward movement of said door, means to move the door outwardlyfrom said position to a fully closed position whereby said elements andmembers cooperate to form a weather seal and utilize an outward thruston the inside of said door to form a more effective seal, and saidvertical members and elements limit said outward movement of said door.

9. In a railway car having a wall, a doorway in said wall, a verticallyshiftable and laterally moveable door moveable in a plane substantiallyparallel with said wall to a position opposite said doorway, said doorprovided with rollers engaging a track mounted upon the car which trackis provided with depressions, the combination of vertical elementsadjacent the vertical edges of said doorway, vertical members carried bysaid door arranged to be disposed at.

least partially on the inside of said elements when the door is oppositesaid doorway and to limit outward movement of said door, a structurehaving a downwardly and outwardly inclined surface positioned so that asthe rollers move into said depressions the door engages said inclinedsurface and moves downwardly and outwardly and said elements and membersare caused to cooperate to form a weather seal and utilize an outwardthrust on the inside of said door to form a more eilective seal, andsaid vertical members and elements limit said outward movement of saiddoor.

10. In et railway car having a wall. a doorway in said wall, avertically shiftable and laterally moveable door moveable in a planesubstantially parallel with said wall to a position opposite saiddoorway, the combination of vertical elements adjacent the verticaledges oi' said doorway, vertical 4members carried by said door arrangedto be disposed at least partially on the inside of said elements whenthe door is opposite said doorway and to limit outward movement of saiddoor, means to dispose the weight oi the door upon downwardly andoutwardly inclined surfaces above and said doorway respectively as thedoor shi! Aownwardly so that said door is forced outwardly from saidposition to a fully closed position whereby said elements and memberscooperate to form a weather seal at the vertical margins of the doorwayand the door and the inclined surfaces cooperate to form a weather sealabove and below the doorway when the door is in said fully closedposition, and said vertical members and elements limit said outwardmovement oi' said door.

ll. In a railway car having a wall with a doorway therein and avertically shiftable and laterally moveable door moveable parallel withsaid wall to a position opposite said doorway, and cooperative sealingmembers about said door and doorway, the combination of means to movethe door outwardly from said position as the door shifts downwardlywhereupon said cooperative means cooperate to form seals above. below,and at both vertical sides of the doorway, certain of said sealingmembers limiting said outward movement o! said door.

l2. In a railway car having a wall with a doorway therein, a verticallyshiftable and laterally moveable door moveable in a plane substantiallyparallel with said wall to a position opposite said doorway, andcooperative sealing members about said door and doorway. the combinationof means to move the door outwardly and downwardly from said position toa fully closed position s0 that said sealing members cooperate to form aweather seal as said door moves outwardly irom opposite said opening tosaid closed position, certain of said sealing members limiting saidoutward movement of said door.

13. In a railway oar having a wall with a doorway therein, a verticallyshiftable and laterally moveable door moveable in a plane substantiallyparallel with said wall to a position opposite said doorway, thecombination oi cooperative loosely tting tongue and groove sealingmembers between said wall and door adjacent the vertical edges thereof,said tongues being within said grooves when the door is opposite saiddoorway, means to move the doorfrom said positioninto engagement with adownwardly and outwardly inclined surface so that said door movesoutwardly and downwardly to a fully closed position whereby a seal isformed between said tongues and grooves and between said door andinclined surface. and said vertical sealing members limit said outwardmovement of said door.

14. In a railway car having a wall with a doorway therein. a verticallyshlttable and laterally moveable door moveable in a plane substantiallyparallel with said wall to a position opposite said doorway, thecombination of scaling members between said wall and door, means to movethe door from said position into en-l gagement with a downwardly andoutwardly inclined surface so that said door is forced outwardly anddownwardly to a fully closed position whereby a seal is formed betweensaid sealing members and between saiddoor and inclined surface, certaino! said sealing members limiting said outward movement ot said door.

KARL F. NYS'I'BOM.

